according to https://btrfs.wiki.kernel.org/index.php/Compression#How_do_I_enable_compression.3F there exist a "NOCOMPRESS" flag, how do i set the NOCOMPRESS flag on a file?
you could certainly have stolen my answer for yourself :)
the easiest is
btrfs property set $THING compression none and a defrag to uncompress it. using
btrfs property to set the
+c force-compression flag is the most flexible, as you can specify a compression type to force, where using
chattr it defaults to using